Question 1 Which of the following parts of the epidemiological triad is not involved when you vaccinate people for meningitis?

Question 1

Which of the following parts of the epidemiological triad is not involved when you vaccinate people for meningitis?

A)

Host

B)

Agent

C)

Mode of transmission

D)

Environment

Question 2

A bimodal curve on a histogram (or epidemiological curve) tells the reader all of the following except:

A)

That the disease source has not been eliminated

B)

That the disease is dying out

C)

That the disease may be spread from person to person

D)

That the disease source may be intermittent

Question 3

Cancer can be caused by Benzene, High dose radiation or with genetic mutations. Each of these can cause cancer independently (without the help of anything else). Each of these factors is:

A)

Necessary but not sufficient

B)

Not necessary NOR sufficient

C)

Not necessary but sufficient

D)

Necessary AND sufficient

Question 4

The rate at which those who are exposed to a pathogen become infected is referred to as:

A)

Infectivity

B)

Virulence

C)

Pathogenicity

D)

Severity

Question 5

Tuberculosis (Tb) does not infect very many individuals. In fact, at the Tb hospital in San Antonio, Tx, many physicians talk with their patients in the courtyard on a daily bases without becoming ill. However, Tb is getting harder to cure and the death rate of Tb is increasing. Which of the following best describe Tb.

A)

Low infectivity; High Virulence

B)

High Infectivity; High Virulence

C)

Low Infectivity; Low Virulence

D)

High Infectivity; Low Virulence

Question 6

Which of the following can be involved in the indirect transmission of disease, from a reservoir to a host?

A)

Suspended air particles

B)

Vehicles

C)

Vectors

D)

All of the above

E)

None of the above

Question 7

When considering norovirus (typically transmitted through indirect, fomite transmission), which phase of the chain of infection is involved when a stair railing of a hospital is not cleaned daily?

A)

Portal of exit

B)

Mode of transmission

C)

Portal of entry

D)

None of the above

Question 8

Herd immunity is irrelevant in public health because humans are not random.

True

False

Question 9

During the smallpox eradication effort, workers from the world health organization would receive a notification that a smallpox cases was diagnosed and would immediately fly to the area and vaccinate everyone in the region for smallpox... even if they were already vaccinated. The epidemiological principle that was being used in this effort was:

A)

Quarantine

B)

Isolation

C)

Herd immunity

D)

Cross infectivity

Question 10

In 2006, there were over 800 human cases of West Nile virus in Idaho (the previous year there were 10). That same year there were significant increases in cases reported in Nicaragua and Spain. By definition, West Nile Virus in 2006 was: